Diodes AZ431A Manuel d'utilisateur télécharger pdf

AZ431-A

Document number: DS36721 Rev. 4 – 2

1 of 21

www.diodes.com

January 2014

AZ431-A

A Product Line of

Diodes Incorporated

ADJUSTABLE PRECISION SHUNT REGULATORS

Description

The AZ431-A is a three-terminal adjustable shunt regulator with

guaranteed thermal stability over a full operation range. It features

sharp turn-on characteristics, low temperature coefficient and low

output impedance, which make it ideal substitute for Zener diode in

applications such as switching power supply, charger and other

adjustable regulators.

The output voltage of AZ431-A can be set to any value between V

REF

(2.5V) and the corresponding maximum cathode voltage (36V).

The AZ431-A precision reference is offered in two voltage tolerance:

0.4% and 0.8%.

This IC is available in 4 packages: TO92 (bulk or ammo packing),

SOT23, SOT25 and SOT89.

Applications

 Charger

 Voltage Adapter

 Switching Power Supply

 Graphic Card

 Precision Voltage Reference

Features

 Programmable Precise Output Voltage from 2.5V to 36V

 High Stability under Capacitive Load

 Low Temperature Deviation: 4.5mV Typical

 Low Equivalent Full-range Temperature Coefficient with

20PPM/

C Typical

 Sink Current Capacity from 1mA to 100mA

 Low Output Noise

 Wide Operating Range of -40 to +125

 Lead-Free Packages: TO92, SOT23, SOT25, SOT89

 Totally Lead-Free; RoHS Compliant (Notes 1 & 2)

 Lead-Free Packages, Available in “Green” Molding Compound:

TO92, SOT23, SOT25, SOT89

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Pin Assignments

(Top View) (Top View) (Top View)

(SOT23/ N Package) (SOT89 Option 1/ R Package) (SOT89 Option 2/ R Package)

ANODE

REF CATHODE

REF

ANODE

CATHODE

REF

ANODE

CATHODE

1 2 3 4 5 6 ... 20 21

Résumé du contenu

Page 1 - REF CATHODE

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Page 2 - High Current Shunt Regulator

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Page 3 - PWM Converter with Reference

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Page 7 - Cathode Current (

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Page 8 - Load Capacitance (F)

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Page 9

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Page 10 - Ordering Information

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Page 12

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Page 13 - Package Outline Dimensions

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Page 20

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